Here is a short video of the Savage Gear Line Thru Trout. It is a very fluid swim bait that is both very flexible and yet durable when you pull it through the water. It is very easy to rig, and has an option of rigging it with the treble hook on the top or the bottom of the lure.
The lure is available in 3 sink rates: Floating, Slow Sinking and Sinking. It comes in many different patterns that span many species. You can find them on Amazon starting around $10 for the 6″ and up, depending on the size you want.
Amazon Product Link: Savage Line Thru Trout